Restorative & Materials · single question
A patient sips approximately 6 carbonated beverages throughout the day. As they walk into your clinic, what is the most likely oral pH?
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Correct answer: D. 5
- A. Incorrect. pH 6.5 is near normal resting saliva pH and would not reflect chronic soda exposure.
- B. Incorrect. pH 7.5 is slightly basic — inconsistent with frequent acidic beverage consumption.
- C. Incorrect. pH 8 is alkaline and not expected after soda intake.
- D. CORRECT. Carbonated sodas are highly acidic (pH 2.5–4). Frequent sipping throughout the day keeps the oral pH chronically depressed well below the critical demineralization threshold for enamel (pH 5.5) and dentin/cementum (pH 6.5). An oral pH of approximately 5 reflects this acidic environment.
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